Commit Graph

209811 Commits

Author SHA1 Message Date
dchagin
5f069937a3 Implement epoll family system calls. This is a tiny wrapper
around kqueue() to implement epoll subset of functionality.
The kqueue user data are 32bit on i386 which is not enough for
epoll user data, so we keep user data in the proc emuldata.

Initial patch developed by rdivacky@ in 2007, then extended
by Yuri Victorovich @ r255672 and finished by me
in collaboration with mjg@ and jillies@.

Differential Revision:	https://reviews.freebsd.org/D1092
2015-05-24 16:41:39 +00:00
dchagin
e7fb40a8a0 For future use in the Linuxulator:
1. Add a kern_kqueue() counterpart for kqueue() with flags parameter.

2. Be a bit secure. To avoid a double fp lookup add a kern_kevent_fp()
counterpart for kern_kevent() with file pointer parameter instead
of file descriptor an pass the buck to it.

Suggested by: mjg [2]

Differential Revision:	https://reviews.freebsd.org/D1091
Reviewed by:	trasz
2015-05-24 16:36:29 +00:00
dchagin
afc381ebf7 Implement F_DUPFD_CLOEXEC fcntl flag.
Differential Revision:	https://reviews.freebsd.org/D1089
Reviewed by:	trasz
2015-05-24 16:34:57 +00:00
dchagin
c7d9312243 Add several fcntl flags.
Differential Revision:	https://reviews.freebsd.org/D1088
Reviewed by:	trasz
2015-05-24 16:32:52 +00:00
dchagin
db8a000521 To avoid code duplication move open/fcntl definitions to the MI
header file.

Differential Revision:	https://reviews.freebsd.org/D1087
Reviewed by:	trasz
2015-05-24 16:31:44 +00:00
dchagin
d1ecbe4998 Use the BSD_TO_LINUX_SIGNAL() wherever there is no need
to check the ABI as it is known.

Differential Revision:	https://reviews.freebsd.org/D1086
2015-05-24 16:30:23 +00:00
dchagin
c04276b109 Convert Linux wait options to the FreeBSD.
Check wait options as a Linux do.
Linux always set WEXITED option not a WUNTRACED|WNOHANG
which is a strange bug.

Differential Revision:	https://reviews.freebsd.org/D1085
Reviewed by:	trasz
2015-05-24 16:28:58 +00:00
dchagin
7ee506a86b Set WIFCONTINUED to the wait status if needed.
Differential Revision:	https://reviews.freebsd.org/D1083
Reviewed by:	trasz
2015-05-24 16:27:38 +00:00
dchagin
c6387d07c9 Rewrite linux_recvfrom. To avoid double conversion of sockaddr use
kern_recvit() directly.
And check fromlen parameter before sockaddr copyin and conversion.

Differential Revision:	https://reviews.freebsd.org/D1082
2015-05-24 16:26:55 +00:00
dchagin
d1e150aef1 Being exported through vdso the note.Linux section used by glibc
to determine the kernel version (this saves one uname call).
Temporarily disable the export of a note.Linux section until I figured
out how to change the kernel version in the note.Linux on the fly.

Differential Revision:	https://reviews.freebsd.org/D1081
Reviewed by:	trasz
2015-05-24 16:25:44 +00:00
dchagin
eb881eec7e Add AT_RANDOM and AT_EXECFN auxiliary vector entries which are used by
glibc. At list since glibc version 2.16 using AT_RANDOM is mandatory.

Differential Revision:	https://reviews.freebsd.org/D1080
2015-05-24 16:24:24 +00:00
dchagin
f1806e4235 Teach kdump to understand both linux emulation.
Differential Revision:	https://reviews.freebsd.org/D1079
Reviewed by:	emaste
2015-05-24 16:22:03 +00:00
dchagin
edf6d015c3 Regen for r283428. 2015-05-24 16:19:57 +00:00
dchagin
bb042fb0da Change linux faccessat syscall definition to match actual linux one.
The AT_EACCESS and AT_SYMLINK_NOFOLLOW flags are actually implemented
within the glibc wrapper function for faccessat().  If either of these
flags are specified, then the wrapper function employs fstatat() to
determine access permissions.

Differential Revision:	https://reviews.freebsd.org/D1078
Reviewed by:	trasz
2015-05-24 16:18:03 +00:00
dchagin
f5eca4c957 Where possible we will use M_LINUX malloc(9) type.
Move M_FUTEX defines to the linux_common.ko.

Differential Revision:	https://reviews.freebsd.org/D1077
Reviewed by:	emaste
2015-05-24 16:14:41 +00:00
andrew
8628fb1e0f Add support for getting the memory map from EFI if it has been pased in
by loader.efi.
2015-05-24 16:11:30 +00:00
dchagin
4dc42a9cd3 Regen for r283424. 2015-05-24 16:11:21 +00:00
dchagin
2f453c26e7 Add preliminary support for x86-64 Linux binaries.
Differential Revision:	https://reviews.freebsd.org/D1076
2015-05-24 16:07:11 +00:00
dchagin
5b7bd42ffe Move FEATURE macros for v4l and v4l2 to the common module.
Differential Revision:	https://reviews.freebsd.org/D1075
Reviewed by:	emaste
2015-05-24 16:00:01 +00:00
dchagin
f18b3d51fa Refund the proc emuldata struct for future use. For now move flags from
thread emuldata to proc emuldata as it was originally intended.

As we can have both 64 & 32 bit Linuxulator running any eventhandler
can be called twice for us. To prevent this move eventhandlers code
from linux_emul.c to the linux_common.ko module.

Differential Revision:	https://reviews.freebsd.org/D1073
2015-05-24 15:54:58 +00:00
dchagin
b08f3f43f9 Introduce a new module linux_common.ko which is intended for the
following primary purposes:

1. Remove the dependency of linsysfs and linprocfs modules from linux.ko,
which will be architecture specific on amd64.

2. Incorporate into linux_common.ko general code for platforms on which
we'll support two Linuxulator modules (for both instruction set - 32 & 64 bit).

3. Move malloc(9) declaration to linux_common.ko, to enable getting memory
usage statistics properly.

Currently linux_common.ko incorporates a code from linux_mib.c and linux_util.c
and linprocfs, linsysfs and linux kernel modules depend on linux_common.ko.

Temporarily remove dtrace garbage from linux_mib.c and linux_util.c

Differential Revision:	https://reviews.freebsd.org/D1072
In collaboration with:	Vassilis Laganakos.

Reviewed by:	trasz
2015-05-24 15:51:18 +00:00
dchagin
9e320cb48d Add newfstatat system call for 64-bit Linuxulator.
Differential Revision:	https://reviews.freebsd.org/D1071
Reviewed by:	trasz
2015-05-24 15:48:34 +00:00
dchagin
c714299c49 Fix compilation with -DDEBUG option.
Differential Revision:	https://reviews.freebsd.org/D1070
Reviewed by:	trasz
2015-05-24 15:47:15 +00:00
tijl
4d24fd0e49 When only 2 bytes can be read from a 4 byte UTF-16 character in a base64
encoded chunk of a UTF-7 string, treat that as an incomplete character and
return an error instead of a shift sequence and no error.

Also check that the low 2 bytes have a valid value.

MFC after:	1 week
2015-05-24 15:47:06 +00:00
dchagin
4dc96a6552 Add 64 bit support to the vdso.
Differential Revision:	https://reviews.freebsd.org/D1069
Reviewed by:	trasz
2015-05-24 15:45:36 +00:00
dchagin
dc4523e6a4 x86_64 Linux do not use multiplexing on ipc system calls.
Move struct ipc_perm definition to the MD path as it differs for 64 and
32 bit platform.

Differential Revision:	https://reviews.freebsd.org/D1068
Reviewed by:	trasz
2015-05-24 15:44:41 +00:00
dchagin
a92a30f54d Disable i386 call for x86-64 Linux.
Differential Revision:	https://reviews.freebsd.org/D1067
Reviewed by:	trasz
2015-05-24 15:43:53 +00:00
dchagin
49e67f3383 Print out proper procmap entry for 64 bit binaries.
Differential Revision:	https://reviews.freebsd.org/D1066
Reviewed by:	trasz
2015-05-24 15:42:36 +00:00
dchagin
c0ca16d4f0 64-bit paltforms, like x86_64, do not use multiplexing on
socketcall system calls.

Differential Revision:	https://reviews.freebsd.org/D1065
Reviewed by:	trasz
2015-05-24 15:41:27 +00:00
dchagin
8a707fd4ea Get ready to commit x86_64 Linux emulation.
All fields of type l_int in struct statfs are defined
as l_long on i386 and amd64.

Differential Revision:	https://reviews.freebsd.org/D1064
Reviewed by:	trasz
2015-05-24 15:39:08 +00:00
dchagin
58270b3600 Remove stale comment about a signal trampoline which
is moved to the shared page at r219609.

Differential Revision:	https://reviews.freebsd.org/D1063
Reviewed by:	trasz
2015-05-24 15:32:52 +00:00
dchagin
4178f554e5 Put linux_platform into the vdso to avoid copying it onto the stack at
every exec.

Differential Revision:	https://reviews.freebsd.org/D1062
Reviewed by:	trasz
2015-05-24 15:30:52 +00:00
dchagin
c7a9185ada Eliminate a now unused global declaration of elf_linux_sysvec.
Differential Revision:	https://reviews.freebsd.org/D1061
Reviewed by:	trasz
2015-05-24 15:29:20 +00:00
dchagin
cd614289ee Implement vdso - virtual dynamic shared object. Through vdso Linux
exposes functions from kernel with proper DWARF CFI information so that
it becomes easier to unwind through them.
Using vdso is a mandatory for a thread cancelation && cleanup
on a modern glibc.

Differential Revision:	https://reviews.freebsd.org/D1060
2015-05-24 15:28:17 +00:00
tijl
7c6ceaed5c Fix decoding of UTF-7 when a base64 encoded chunk appears at the end of
the input buffer.

_citrus_UTF7_mbtoutf16 stored the decoder state at the beginning so it
could restore this state on an incomplete character such that the next
call would restart the decoding.  The problem was that "-" (end of base64
mode) at the end of a string was also treated as an incomplete character
but was also removed from the state buffer.  So the initial state would be
restored (with base64 mode) and the next call would no longer see the "-"
so it continued in base64 mode.

This state saving/restoring isn't needed here.  It's already handled
elsewhere (citrus_iconv_std.c:_citrus_iconv_std_iconv_convert) so just
remove it.

Also initialise *nresult.

PR:		200398
Tested by:	delphij
MFC after:	1 week
2015-05-24 15:27:31 +00:00
dchagin
ee8589f91c Regen for r283403. 2015-05-24 15:22:33 +00:00
dchagin
ed4f44fbe7 Implement pselect6() system call.
Differential Revision:	https://reviews.freebsd.org/D1051
Reviewed by:	trasz
2015-05-24 15:21:25 +00:00
dchagin
1377a864ca Regen for r283401. 2015-05-24 15:19:44 +00:00
dchagin
98b4e8b812 Implement prlimit64() system call.
Differential Revision:	https://reviews.freebsd.org/D1050
Reviewed by:	emaste, trasz
2015-05-24 15:18:19 +00:00
dchagin
158314c610 Regen for r283399. 2015-05-24 15:15:46 +00:00
dchagin
1ec9e6445a Implement dup3() system call.
Differential Revision:	https://reviews.freebsd.org/D1049
Reviewed by:	emaste
2015-05-24 15:14:51 +00:00
dchagin
0922240f49 Sched_rr_get_interval returns EINVAL in case when the invalid pid
specified. This silence the ltp tests.

Differential Revision:	https://reviews.freebsd.org/D1048
Reviewed by:	trasz
2015-05-24 15:13:56 +00:00
dchagin
c41e8e23e1 Regen for r283396. 2015-05-24 15:12:38 +00:00
dchagin
e29d24e3d8 Implement rt_sigqueueinfo() system call.
Differential Revision:	https://reviews.freebsd.org/D1047
Reviewed by:	trasz
2015-05-24 15:11:32 +00:00
dchagin
3320bf8ac4 Regen for r283394. 2015-05-24 15:08:25 +00:00
dchagin
912ea57deb Implement waitid() system call.
Differential Revision:	https://reviews.freebsd.org/D1046
2015-05-24 15:06:39 +00:00
dchagin
335c9a98ce Regen for r283392. 2015-05-24 15:05:22 +00:00
dchagin
03d6110098 struct l_rusage does not defined for i386 Linuxulator due to it's nature.
Differential Revision:	https://reviews.freebsd.org/D2139
2015-05-24 15:04:12 +00:00
dchagin
e28b659be1 To reduce code duplication introduce linux_copyout_rusage() method.
Use it in linux_wait4() system call and move linux_wait4() to the MI path.
While here add a prototype for the static bsd_to_linux_rusage().

Differential Revision:	https://reviews.freebsd.org/D2138
Reviewed by:	trasz
2015-05-24 15:03:09 +00:00
dchagin
3445f2f9f2 Add a function for converting wait options.
Differential Revision:	https://reviews.freebsd.org/D1045
Reviewed by:	trasz
2015-05-24 15:00:27 +00:00